Welcome to
portzen construction

Portzen Construction is a general contractor that focuses on commercial and industrial construction projects. In addition to being a general contractor, Portzen Construction self performs work including concrete, excavating, carpentry and plumbing/hydronics. Portzen Construction feels the ability to self-perform a large part of projects allows us to provide value added services to our clients.

Types of construction projects range from schools/university buildings, hospitals, water/wastewater treatment facilities, swimming pools and flood mitigation projects to name a few. Portzen Construction is the largest union contractor in the Dubuque area.


General Contracting

Portzen Construction’s general contracting services include construction management and design build services. Self-performed field work includes rough carpentry, finish carpentry, framing, steel studs & drywall and Duro-Last Roofing.


Portzen Construction’s excavating services include building/site demolition, utilities (storm, sewer, water main), building excavation and site excavation.


Portzen Construction’s concrete services include flatwork, structural concrete, paving and Tilt-Up concrete panels.

Plumbing & Heating

Portzen Construction has a plumbing and heating division of the company with a d/b/a name of Dubuque Plumbing & Heating. Services for this division include plumbing, hydronic heating, medical gas piping and process piping.